✔ 最佳答案
Pet is an animal that you keep at your own house. For me, the term is
objective. However, when using the word companion, it means much more
than a pet, it means someone you love, someone you trust, and someone you
dedicate to. The feelings are mutual. Let say you can have several dogs but
there may be only one who is close to your heart. I guess there are lots of
emotional feelings involved. Basically, you treat him like a person, especially
in emotional wise.
2008-05-19 11:16:10 補充:
Pet is a domesticated animal kept for pleasure rather than utility.
參考: I have a dog who is my best companion.